fix: add basic tests for FirefoxManager

Author: tucksaun

tests/ProcessManager/FirefoxManagerTest.php

@@ -0,0 +1,71 @@
+<?php
+
+/*
+ * This file is part of the Panther project.
+ *
+ * (c) Kévin Dunglas <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Symfony\Component\Panther\Tests\ProcessManager;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Panther\Exception\RuntimeException;
+use Symfony\Component\Panther\ProcessManager\FirefoxManager;
+
+/**
+ * @author Tugdual Saunier <[email protected]>
+ */
+class FirefoxManagerTest extends TestCase
+{
+    public function testRun(): void
+    {
+        $manager = new FirefoxManager();
+        $client = $manager->start();
+        $this->assertNotEmpty($client->getCurrentURL());
+        $manager->quit();
+    }
+
+    public function testAlreadyRunning(): void
+    {
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('The port 4444 is already in use.');
+
+        $driver1 = new FirefoxManager();
+        $driver1->start();
+
+        $driver2 = new FirefoxManager();
+        try {
+            $driver2->start();
+        } finally {
+            $driver1->quit();
+        }
+    }
+
+    public function testNonDefaultPort(): void
+    {
+        $manager = new FirefoxManager(null, null, ['port' => 4445]);
+        $client = $manager->start();
+        $this->assertNotEmpty($client->getCurrentURL());
+        $manager->quit();
+    }
+
+    public function testMultipleInstances(): void
+    {
+        $driver1 = new FirefoxManager();
+        $client1 = $driver1->start();
+
+        $driver2 = new FirefoxManager(null, null, ['port' => 4445]);
+        $client2 = $driver2->start();
+
+        $this->assertNotEmpty($client1->getCurrentURL());
+        $this->assertNotEmpty($client2->getCurrentURL());
+
+        $driver1->quit();
+        $driver2->quit();
+    }
+}